How do I remove from the display a picture which is downloaded using the following snippet (from Coronas examples):
display.loadRemoteImage( "http://www.coronalabs.com/demo/hello.png", “GET”, networkListener, “helloCopy.png”, system.TemporaryDirectory, 50, 50 )
To remove a display object use removeSelf() http://docs.coronalabs.com/daily/api/type/DisplayObject/removeSelf.html
[lua]local someImage = display.loadRemoteImage( "http://www.coronalabs.com/demo/hello.png, “GET”, networkListener, “helloCopy.png”,system.TemporaryDirectory, 50, 50 )
someImage:removeSelf()
someImage = nil
[/lua]
Thanks Jedi. I tried this yesterday, but didn’t have much success. Maybe because I displayed the pic at startup and tried to remove it inside a tap event (I’m a newbie to LUA, so I often get a little confused). I am not “rock steady” when it comes to local variables and global ones.
I will try your suggestion tonight and report back then.
Sorry, my example is no good. I have never used display.loadRemoteImage and it seems it does not return anything.
You can do something like this instead:
[lua]local function imageTap(event)
local image = event.target
image:removeSelf()
image = nil
end
local function networkListener( event )
if ( event.isError ) then
print ( “Network error - download failed” )
else
local image = event.target
image:addEventListener( “tap”, imageTap )
end
end
display.loadRemoteImage( “https://pbs.twimg.com/profile_images/378800000366520881/02d070af6c3001a0f9d4c05b860b51eb_normal.png”, “GET”, networkListener, “helloCopy.png”,system.TemporaryDirectory, 50, 50 ) [/lua]
Your code seems to work, Jedi.When tapping the image it disappears. But in my app the image shal be removed when I tap another button.
I tried to replace the imageTap identifier with my own handleButtonEvent identifier and moved the removeSelf stuff inside this event. The result being that the button disappeared and the image remained.
I am a little stuck.
Edit: With some tweaking I made it work. Thanks Jedi!
To remove a display object use removeSelf() http://docs.coronalabs.com/daily/api/type/DisplayObject/removeSelf.html
[lua]local someImage = display.loadRemoteImage( "http://www.coronalabs.com/demo/hello.png, “GET”, networkListener, “helloCopy.png”,system.TemporaryDirectory, 50, 50 )
someImage:removeSelf()
someImage = nil
[/lua]
Thanks Jedi. I tried this yesterday, but didn’t have much success. Maybe because I displayed the pic at startup and tried to remove it inside a tap event (I’m a newbie to LUA, so I often get a little confused). I am not “rock steady” when it comes to local variables and global ones.
I will try your suggestion tonight and report back then.
Sorry, my example is no good. I have never used display.loadRemoteImage and it seems it does not return anything.
You can do something like this instead:
[lua]local function imageTap(event)
local image = event.target
image:removeSelf()
image = nil
end
local function networkListener( event )
if ( event.isError ) then
print ( “Network error - download failed” )
else
local image = event.target
image:addEventListener( “tap”, imageTap )
end
end
display.loadRemoteImage( “https://pbs.twimg.com/profile_images/378800000366520881/02d070af6c3001a0f9d4c05b860b51eb_normal.png”, “GET”, networkListener, “helloCopy.png”,system.TemporaryDirectory, 50, 50 ) [/lua]
Your code seems to work, Jedi.When tapping the image it disappears. But in my app the image shal be removed when I tap another button.
I tried to replace the imageTap identifier with my own handleButtonEvent identifier and moved the removeSelf stuff inside this event. The result being that the button disappeared and the image remained.
I am a little stuck.
Edit: With some tweaking I made it work. Thanks Jedi!
